Fastener



FIG. 1 is a top plan view of a fastener showing my new design;

FIG. 2 is a front view thereof, the rear view being identical;

FIG. 3 is a left side view thereof, the right side view being identical;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a cross sectional view taken along line 5--5 in FIG. 1;

FIG. 6 is a cross sectional view taken along line 6--6 in FIG. 2; and,

FIG. 7 is a cross sectional view taken along line 7--7 in FIG. 2. 

The ornamental design for a fastener, as shown and described. 